Op-Amp cheatsheet?

-
Just found this old post at facebook. Cool!?


Opamp BasicsLike -> Microcontroller Projects & Updates
Posted by Microcontroller Projects & Updates on Thursday, July 4, 2013

Comments

Post a Comment

Popular posts from this blog

Arduino RFID, RC522, VUSB HID as Keyboard

-
Image
Wrapped my project into nice grey project box. Nice project i have to combine Arduino, RFID (RC522), VUsb together as HID Keyboard. Just tap an RFID card and my little chips send it to computer as keyboard input. Warning this project not working on Windows XP. And runs perfect on Linux OS, WinVista, Win7 and Win8.1 **Updates https://github.com/adesst/arduino-vusb You will need to create a dir named *UsbDevice* in the arduino libraries, this example taken from my Linux Debian8 64, yours may vary. adesanto@debian8:/opt/AVR/arduino-1.6.9/libraries$ ls -ltha total 6.1M drwxr-xr-x 26 adesanto adesanto 4.0K Feb 12 00:49 . drwxr-xr-x 12 adesanto adesanto 4.0K Feb 12 00:49 .. drwxr-xr-x  3 adesanto adesanto 4.0K Feb 12 00:12 UsbDevice And clone the code into the newly created dir. Then the 2 codes below are good to be compiled. For the source codes, you can find them here: https://github.com/adesst/arduino-vusb-hid-rfid-keyboard Flash this code to 1st chip, that wi
Read more

CakePHP Captcha component with Securimage

-
I had made some changes so the component could work with cakePhp 1.3, or at least it works in my application. The original article is here , download the latest and the code i have modified. Make sure you have: 1. Copied the component file into your app/controllers/components. 2. Copied the view file into your app/views/element/ 3. To use "captcha_code" field form input. You could "diff" to see what changes i had made in the code, specially the component file. Hope it helps. Happy baking.
Read more

Codeigniter Oracle Transaction BUG

-
Guys, ini baru ketemuin BUG . Khusus nya utk Driver Database Oracle, OCI8. Seharus nya transaksi yg di awali dg trans_start(TRUE) tidak akan ter- COMMIT . $this->db->trans_start(TRUE); $this->db->simple_query("insert into test (id,name) values ('1','ade1') "); $this->db->simple_query("insert into test (id,name) values ('1','ade2') "); $this->db->simple_query("insert into test (id,name) values ('1','ade3') "); $this->db->trans_complete(); Expected result: rollback Actual result: rollback Semua berjalan lancar, transaksi di rollback. Lohh mana BUG nya? Nahh cuba sisipkan 'SELECT' query di antara
Read more